ArticlePlastic and reconstructive surgery. Global open2026
Enhancing Regenerative Outcomes: Histopathological Comparison of Calcium Hydroxylapatite Alone and Combined With Platelet-rich Fibrin: A 6-week Study.
Article in Plastic and reconstructive surgery. Global open, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Authors and funding
6 authors.
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Abstract
Background: Calcium hydroxylapatite-carboxymethylcellulose (CaHA-CMC) is a widely used biostimulatory filler that promotes collagen production through fibroblast activation. Platelet-rich fibrin (PRF) has been proposed as a bioactive adjunct capable of enhancing tissue regeneration. Because collagen remodeling becomes more evident weeks after injection, this study aims to evaluate whether the addition of PRF modifies the subdermal tissue response at 6 weeks. Methods: A prospective observational study was conducted in 5 patients undergoing abdominoplasty. Four conditions were evaluated: saline (control), PRF alone, CaHA-CMC + saline solution, and CaHA-CMC + PRF. Injections were administered subdermally 6 weeks before surgery. Tissue samples were collected intraoperatively and analyzed using hematoxylin and eosin staining and immunohistochemistry. A semiquantitative histomorphometric surrogate analysis was performed using the collagen-associated eosinophilic area. Statistical comparisons were conducted using Wilcoxon signed-rank tests. Results: The CaHA-CMC + PRF group demonstrated the highest collagen-associated eosinophilic area values (~4.4 times versus control; Conclusions: The addition of PRF to CaHA-CMC may enhance subdermal tissue remodeling at 6 weeks. However, given the small sample size and semiquantitative methodology, these results should be interpreted as exploratory and require further validation.
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